Head Gasket Leak???

Hi everyone.... so i found motor oil at the top level of my coolant radiator.... which sucks! there's enough that it's a good layer that i can soak up with paper towels. So, before i really flip, i wanted to confirm to make sure and went and did a super clean coolant flush with the cleaner and running the water hose in the radiator.... finished with new coolant. After the first drive.... sure enough....same level of motor oil thickness at the top level of the coolant. FML!

Here's my question....need to figure out what is the root cause of why the head gasket is leaking. It's fairly new with about 3k miles on it, and not run hard. The motor is 0.03" over, 10:1 compression with solid flat tappet and mopar performance AL "452" heads

Any ideas on what the root cause is? faulty gasket? warp heads?